The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 2013
Filed:
Apr. 24, 2009
Applicant:
Gregory P. Prior, Birmingham, MI (US);
Inventor:
Gregory P. Prior, Birmingham, MI (US);
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B 33/00 (2006.01); F02B 39/04 (2006.01);
U.S. Cl.
CPC ...
F02B 39/04 (2013.01);
Abstract
A supercharger is provided, comprising a plurality of rotatable supercharger rotors each having a plurality of interleavable lobes configured to move air from an inlet to an outlet of the supercharger. Inner chambers in the lobes define an end opening and perforated end faces, at the end openings defining at least one port, having a length and a diameter. The at least one port is configured to operate with an associated air mass in the inner chamber to attenuate sound adjacent to the end opening.